History

• Drift Chamber Track Finding for Mark III at SPEAR
• + Arrival of the SLAC's First 3D Graphics Boxes (the IBM5080)
• = a lasting interest in Event Displays

Hans Drevermann, the Event Display expert for the ALEPH collaboration, speaks of Event Display writers as falling into two distinct groups, the church of 3D and the church of 2D. In those terms, I must say that I began my work solidly in the church of 3D, though over time I have moved a long way towards the other church.

The Mark III Collaboration at SPEAR

• 1980-1983
• with Abraham Seiden
• IBM VM
• SLAC Unified Graphics
• Spiffiest on IBM5080

The Mark II Upgrade at SLC

• 1984-1987
• with Abraham Seiden, Alan Weinstein
• Essentially the same as the Mark III Event Display
• Sample image: charged tracks and drift chamber hits

The SLD Collaboration at SLC

• 1988-present
• with Richard Dubois, Tony Johnson (early work by Matthew Jones)
• Approximately 8 person/years total effort
• IBM VM, DEC VMS (VAX and Alpha)
• the last stand of SLAC Unified Graphics
• SGI implementation has Unified Graphics on DEC VMS feeding a network daemon on the SGI
• Spiffiest on SGI or in MIDAS
• Sample images
  • charged tracks with focus on muon systems
  • vertex detector closeup showing charged tracks and hit CCDs
  • raw data in all subsystems plus charged tracks and calorimeter clusters
  • MIDAS screen capture showing multiple Event Display windows